Liquid fuel vaporizer



Oct. 16, 1934. c. A. FRENCH LIQUID FUEL VAPORIZER Filed June 15, 1935 qoovcoooo uoooooono uinn 0 I 0 l 9 u I I! O U D 0 0 O 0 O 0 0 a 0 Patented Oct. 16, 1934 v UNITED STATES PATENT OFFICE I This, invention relates to a fuel vaporizer. 'More particularlyit relates to a vaporizer construction particularly designed for handling heavy liquid hydro-carbons.

The principal object of the invention is to pro- 'vide a'vaporizer which will completely vaporize heavy liquid fuels and maintain them in vaporized condition when mixed withair sumcientfor completeblue flame combustion.

9 Another object is..to provide an improved con-- struction for vaporizing liquid fuels by complete combustion of a portion of the fuel in direct contact with the remainder of the fuel. 7

These objects and others whichwill be apparent M from the description to followgareaccpmplished by a particular construction as shownTin-the single figure of the drawing which illustrates "a vertical section of the device.

A casing-10, which forms the vaporizing cham- W her, is in the form of a flat drum positioned horiaontally, the side wall being a cylinder short in height compared to diameter and the bottom and top wallsbeing circular. A plurality of rows of openings 11 are provided around the cylindrical wall of the casing. A perforated cylindrical member 12, which may be perforated as shown or formed as a screen, is mounted within the casing 1c, spaced from the cylindrical ,wall thereof and extending to the, top and bottom walls. A conical baille member :13 is mounted within the casing concentric with respect thereto, the small end of the cone being adjacent the top of the casing. A plurality of openings 14 are formed around the bottom of the conical bai'fle below the bottom wall of the casing, through said bottom wall, and into contact with the conical baiiie member 13. Said cylindrical member is perforated between the conical baiiie member and N the bottom wall of the casing.

A fan'or blowerhousing l6is positioned below. the casing 10, spaced therefrom, and held in position by a flanged cylindrical spacing member 1'7 secured to the housing and to the bottom of the i5 casing. A shaft 18 extends vertically through the bottom of the housing and centrally through the member 15 and the conical member 13, into the main chamber of the casing 10. Suitable bearings are formed on the bottom wall of the housing iii: 16 and in the baiile member 13 for said shaft. The flanged discharge of the fan housing may be connected directly to the supply chamber of a burner grating or with a conduit leading to a more distant location.

55 At the upper endof the shaft adjacent the top member. A cylindrical member 15 extends from of the casing 10, a distributor disk 19 is mounted for rotation with the shaft. A nozzle 20 extending into the top of the casing, centrally thereof, is connected with a conduit 21 for supplying liquid under pressure to the nozzle. A spark plug 22 is mounted in the top wall of the casing .10.

An impeller or fan 23 is mounted on the shalt 18 within the housing 16. It will be noted that r the cylindrical member 15 extends down to and slightly within the upper horizontal wall of'the to housing 18 adjacent the inner ends of the blades forming the impeller. An opening 24, formed in the upper wall q f the housing 16, provides an annular space for thehdmission of air around the cylindrical member 15. A plurality of openlugs 25 formedin the connecting member 1"! provide for the admission of air therethrough for delivery to the blower. Apulley 26 is mounted on the shaft 18 for the application of power thereto.

In the operation of the vaporizer, as above 76 described, liquid fuel is fed through the nozzle 20 on to the disk 19, which is driven at a comparatively high rate of rotation. The fuel is distributed from the periphery ,of said disk as a spray, upon the screen 12. By means of the spark plug 22 said spray is ignited. At the initiation of the vaporizer a limited amount of liquid is delivered on the disk 19, whereby suiilcient air is available by entrance through the openings 11 and the screen 12, to maintain substantially complete combustion whereby the vaporizer parts are quickly warmed up so that the vaporizer can then be put into full operation. The fan 23 draws air through the annular inlet formed by the (pening 24 and gases through the cylindrical member 15 from the vaporizer. The parts are so proportioned that with full operation suflicient air is drawn in and mixed with the vaporization products for complete combustion thereof.

As greater quantities of fuel are delivered to the disk 19 the vaporization products are formed in amounts greater than the air available for complete combustion. The flame of combustion I is then confined to the small jets of air coming by capillary action the small openings formed therein. The small amount of air being admitted forms jets through these openings-burning the fuel in the vicinity thereof and permitting thereby suflicient heat for the vaporization of the remainder of the fuel.

It is to be understood that applicant has shown and described only a preferred embodiment of his improved fuel vaporizer and that he claims as his invention all modifications falling within the scope of the appended claims.

What is claimed is: I

1. A liquid fuel vaporizer-comprising a vaporizer casing, a screen mounted within said casing spaced-from the walls thereof, restricted means to admit air in limited amounts through the casing to said screen, means for distributingliquid fuel in finely divided form in the casing, means to ignite said fuel, means to withdraw the re-" sultant combustion and vaporization products from the casing, and means to mix said products with air suiiicient for complete combustion.

2. A vaporizer comprising a. vaporizer casing,

a screen mounted within said casing spaced-from the walls thereof, restricted means to admit air in limited amounts through the casing to said screen, means for distributing liquid fuel in finely through the botto'niwall of the into contact, with the-baiile member, the portionof "saidmem-s: i hin the Q 8! 'b s perforated-2 to 1 form means'of communicaticncbetween-the interior of..

divided form 'in the'casing and on said screen, means to ignite said fuel, means to withdraw the resultant combustion and vaporization products from the casing, and means to mix said products] with air sumcient for complete combustion.

3. A liquid fuel vaporizer comprising a .vapor izer casing, a screen mounted within said casing spaced from the wall thereof, restricted means to admit air in limited amounts through the casing to said screen, means for distributing liquid fuel in finely divided form in the casing. means to ignite said fuel, means to withdraw the resultant combustion and, vaporization products from the casing, a blower housing secured tothe vaporizer-casing, means for delivering gases from .the casing to saidhousing, and means for delivering air .toithe housing.

- 4. A liquid fuel vaporizer comprising a vaporizer casing, a cylindrical screen mounted within said casing spaced from the wall thereof, restricted means to admit air in'limited amounts through the casing to said screen, ,a rotating disk mounted within the casing. means for delivering fuel to said disk, means to ignitesaid fuel, means to wlthdrawthe resultant combustion and vaporiza-. tion products from the casing, and means to mix said products with air suflicient forcomplete combustion. 3'

5. In a vaporizer and burner a cylindrical vaporizing. casing, inlet openings around the .cylindricalwall of the-casing, a cylindrical screen within the extending. from top to bottom thereof and spaced'from the wall of the casing, a baiiie memberin the casing mounted concentric with respect-,thereta-openings in the baiiie member forming communication. between the main P rtion of the casing and the portion beneath the baiile member, a cylindrical member extending the member and-thev portion of-thewcasing neath the baiiie member,;a blower housing prozvided with a central. inlet openings-means forqw mounting said in spaced irelatiommtn:

respect to the vaporizing casing, the cylindrical member from the bottom wall of the casing extending adjacent the central inlet opening of the blower housing, a blower fan mounted within the housing, a rotatable fuel distributing disk mounted in the vaporizing casing, means for supplying fuel to said disk, and means for igniting fuel spray delivered from said disk.

6. In a vaporizer and burner a cylindrical vaporizing casing. .inlet openings around the cylindrical wall of the casing, a cylindrical screen within the casing extending from top to bottom thereof and spaced from the wall of the casing, a baiiie member in the casing mounted concentric with respect thereto, openings in the bailie member forming communication between the main portion of the casing and the portion beneath the blower housing,ja blower fan' mounted within the housing, a shaft on which said blower is mounted extending through the blower housing, the cylindrical member and into the vaporizing casing,

means for applying power to said shaft, a rotatable fuel distributing disk mounted on said,shaft '1 within the vaporizing casing, means for supplying fuel to said disk, and means for igniting fuel spray delivered from said disk.

7. In a vaporizer and burner a vaporizing cas ing cylindrical in shape, inlet openings around 11 'the cylindrical wall of the casing, a cylindrical, screen within the casing extending from top to bottom thereof and spaced from the cylindrical wall and easing, a conical baiiie member inthe casing mounted concentric with respect thereto, openings in the bailie member forming communication between the main portion of the casing and the portion beneath the baiiie member, a-

blower housing, means for mounting said housing in spaced relation with respect'tothe vaporizing 25 screen within the casing extending from top to bottom thereof and spaced from the cylindrical wall and casing, a conical bafiie member in the casing mounted concentric with respect thereto,

openings in the baffle member forming communi- I' cation betweenthe main portion of the casing :'and the portion beneath the baflie' member, a fuel idistributing means mounted within the vaporizing J-casing, means for supplying fuel thereto, and imea'nscfor igniting fuel spray delivered from said distributing-means.

CHARLES A. FRENCH. 

